How to play Gbdim7: a diminished 7th built on Gb, with 3 ways to play it, the notes, the keys it belongs to, and songs that use it.
The first diagram is a common voicing: played at the first few frets. An X above a string means don't play it; an O means play it open.
Frets from the low E string to the high E string: 2 x 1 2 1 x (x = not played). Fingers: 2 x 1 3 1 x (1 index, 2 middle, 3 ring, 4 pinky, T thumb).
This fingering is one good option, not the only one. If another finger feels more comfortable for your hand, or sets up the chord before or after more easily, use it.
| Note | Gb | Bbb | Dbb | Fbb |
|---|---|---|---|---|
| Interval | R | b3 | b5 | bb7 |
Gbdim7 is a diminished 7th with Gb as its root. The full theoretical spelling is Gb, Bbb, Dbb, Fbb. This voicing sounds every chord tone.
Gbdim7 is a diatonic chord (built from the key's own notes) in 0 major keys and 4 minor keys. The roman numeral is the chord's place in that key; tap a key for all of its chords.
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Gbdim7 is spelled Gb, Bbb, Dbb, Fbb: the root, minor 3rd, flat 5th, double-flat 7th. The common guitar voicing sounds every one of them.
Frets from the low E string to the high E string: 2 x 1 2 1 x (x means the string is not played). Fingers: 2 x 1 3 1 x (1 index, 2 middle, 3 ring, 4 pinky, T thumb). Lay your 1st finger (index) across the D string to the B string at the 1st fret (a barre). Your 2nd finger (middle) goes on the low E string at the 2nd fret. Your 3rd finger (ring) goes on the G string at the 2nd fret. Strum from the low E string down, skipping the A and high E strings. The fingering is one good option; if another finger feels more comfortable or suits the chords around it, use that.
Gbdim7 belongs to 4 keys: C# minor (the iv°, from the harmonic minor), E minor (the ii°, from the harmonic minor), Bb minor (the vi°, from the harmonic minor) and G minor (the vii°, from the harmonic minor).
